You are never too old to set another goal or to dream a new dream.
不对称催化的美妙之处在于它能从简单中创造复杂。
I don't think you need to be sad to write a sad song.
你唯一应该超越的人就是昨天的自己。
智能化矿山建设是煤炭行业未来发展的方向。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法的:它是关于理解的。